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Photographing people in the snow with fill-flash

Kropotkin

Bicester, UK
71 posts

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"RE: Photographing people in the snow with fill-flash"

Kropotkin Registered since 02nd Dec 2012
Sat 15-Dec-12 06:25 PM

Hi Russ

OK. This is because the exposure system makes an assumption about 18% grey and nothing to do with TTL-BL specifically right? The snow is the problem. I think that is the main point for me.

However on the advanced problem... my understanding is something like this: the camera can measure the amount of light reflected from a scene. But it doesn't know anything about the surfaces doing the reflecting. So it has to make an assumption that all scenes are made up of 18% grey.

In the case of snow it gets a lot of light back but still makes the assumption that the scene is 18% grey. Therefore it thinks the scene is brighter than it is. (If 18% grey was reflecting that much light it would be really bright). So it underexposes.

The main thing then was that it is the snow that means I may have to add EV by one or two stops not something to do with TTL-BL.

I am interested in your comments about Program mode. I've never used it assuming it is for amateurs. Perhaps I should try.

Thanks

--Justin



A general, generic topic Photographing people in the snow with fill-flash [View all] , Kropotkin , Fri 14-Dec-12 09:16 PM
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